ABB HT607261 - Fig. 22: Tightening Procedure; Table 9: Torque-Controlled Tightening of the Pressure Screws

Operation Manual / A170-M.. - A175-M..
3 Removal and installation / 3.3 Installing the turbocharger
© Copyright 2021 ABB. All rights reserved. HZTL4033_EN Rev.H July 2021
Tightening procedure
Fig.22: Tightening procedure
Product Fixing screw [mm] Tightening torques [Nm]
A170-M M30 45
A175-M M36 85
Table9: Torque-controlled tightening of the pressure screws
1. Screw in pressure screws crosswise by hand until reaching the stop.
2. Tighten pressure screws crosswise to 50% of the tightening torque specified in the
table.
3. Tighten pressure screws crosswise to 100% of the tightening torque specified in the
table.
4. Work in a circle to tighten all pressure screws to 100% of the tightening torque specified
in the table.
5. Tighten pressure screws to 100% in 5…7 rounds until the required residual tightening
angle of <20° is achieved.
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